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4 Replacement Procedures 4.19 CPU
Installing the CPU
To install the CPU, follow the steps below and refer to figures 4-28 to 4-30.
1. Make sure the cam is in the open position.
2. Seat the CPU in the CPU socket. Make sure the position is exact to avoid damaging
pins on the CPU.
3. Fix the CPU by rotating the cam 180 degrees clockwise with a flat-blade
screwdriver.
4. Apply new grease on the CPU using a special syringe as shown in the following
figure. Apply quarter of scale (0.25ml) of grease evenly on the CPU chip. When
silicon grease is already applied to the CPU, wipe them off with a close in advance.
CAUTION: When installing the CPU, apply new grease on the top of the CPU chip.
When installing the fin, make sure the bottom of the fin covers the top of the
CPU.
Figure 4-30 Applying new grease
5. Install the fin.
6. Place the CPU holder and secure it with the following screws in the order of the
number marked on the holder.
• M2×4B BIND screw ×3
4-52 Satellite M30-35 Maintenance Manual (960-455)